JavaScript, Node.js: is Array.forEach asynchronous?

Question

I have a question regarding the native Array.forEach implementation of JavaScript: Does it behave asynchronously? For example, if I call:

[many          


        

Answer 1

There is a package on npm for easy asynchronous for each loops.

var forEachAsync = require('futures').forEachAsync;

// waits for one request to finish before beginning the next 
forEachAsync(['dogs', 'cats', 'octocats'], function (next, element, index, array) {
  getPics(element, next);
  // then after all of the elements have been handled 
  // the final callback fires to let you know it's all done 
  }).then(function () {
    console.log('All requests have finished');
});

Also another variation forAllAsync